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Columbus
My Store
Open Tomorrow At 10am
3635 West Broad Street
Columbus, Ohio 43228
614-869-3115
What’s going on at Cycle Gear
Services
Experienced staff support available on site
Store Events
Meet the local riding community for Bike Nights & more
Shop the Store
Find out what’s in stock and ready to go
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Helmet shape is Intermediate Oval
Shape: Intermediate Oval
Weight: 3.37 lbs.
What's this?

Alpinestars SM3 Radium Helmet

For off-road riding, the Supertech M3 Helmet stands as a value-driven choice well-suited for MX, enduro, and various recreational terrains. This helmet is designed to excel under challenging conditions, featuring both DOT and ECE certifications that ensure safety and performance. The product is enhanced with Alpinestars' Rotational Acceleration Force Protection technology, offering crucial protection to riders by mitigating brain injuries from oblique impacts. The SM3 is constructed with four densities of EPS, integrated across five different EPS sizes, enabling a finer-tuned fit for a wide range of head shapes.

Construction:

  • Thermo-injected shell incorporating a special polymer blend
  • Rotational Acceleration Force Protection
  • Visor Release
    • Patented visor release system ensures the visor is released with the correct predetermined amount of force
    • Effectively reduces the forces on the rider’s neck during an impact
  • 5 EPS inner liner sizes
  • 4 densities of EPS effectively manage volume and impact performance
  • Hydration tube channels are integrated into the helmet’s cheek pads for convenience and performance

Comfort:

  • Fit can be tailored to the rider’s head replacement liner and cheek pads with different thicknesses (sold separately) 
  • Maximized ventilation and high levels of heat transfer exchange
  • 10 inlets and 7 exhaust ports
  • 25mm soft textile chin strap

Safety:

  • Rotational Acceleration Force Protection
    • Alpinestars patented low-friction coating is applied to the inner part of the main EPS liner to reduce the rotational acceleration forces
    • Acts as a slip plane to mimic the brain’s own low-friction cerebrospinal fluid
    • Reduces forces of oblique impacts
  • Equipped with an Emergency Release Cheek Pad System
    • Permits the safe and easy removal of the cheek pads while the helmet is still on
  • Stainless steel D-rings
  • Emergency Release System and removable cheek pads
  • DOT and ECE 22.06 certified
Read More
Product Style Item # Store SKU Manufacturer Product # Availability
Product Style XS / Black/Red/White Item # 10467323 Store SKU 393887 Manufacturer Product # 8300826-1553-XS Availability Only 1 Left: Ships within 24 hours
Product Style SM / Black/Red/White Item # 10467324 Store SKU 393888 Manufacturer Product # 8300826-1553-S Availability In Stock: Ships within 24 hours
Product Style MD / Black/Red/White Item # 10467325 Store SKU 393889 Manufacturer Product # 8300826-1553-M Availability In Stock: Ships within 24 hours
Product Style LG / Black/Red/White Item # 10467326 Store SKU 393890 Manufacturer Product # 8300826-1553-L Availability In Stock: Ships within 24 hours
Product Style XL / Black/Red/White Item # 10467327 Store SKU 393891 Manufacturer Product # 8300826-1553-XL Availability In Stock: Ships within 24 hours
Product Style 2XL / Black/Red/White Item # 10467328 Store SKU 393892 Manufacturer Product # 8300826-1553-XXL Availability Only 3 Left: Ships within 24 hours
Product Style XS / Black/White/Grey Item # 10467317 Store SKU 393881 Manufacturer Product # 8300826-1546-XS Availability In Stock: Ships within 24 hours
Product Style SM / Black/White/Grey Item # 10467318 Store SKU 393882 Manufacturer Product # 8300826-1546-S Availability In Stock: Ships within 24 hours
Product Style MD / Black/White/Grey Item # 10467319 Store SKU 393883 Manufacturer Product # 8300826-1546-M Availability In Stock: Ships within 24 hours
Product Style LG / Black/White/Grey Item # 10467320 Store SKU 393884 Manufacturer Product # 8300826-1546-L Availability In Stock: Ships within 24 hours
Product Style 2XL / Black/White/Grey Item # 10467321 Store SKU 393886 Manufacturer Product # 8300826-1546-XXL Availability In Stock: Ships within 24 hours
Product Style XL / Black/White/Grey Item # 10467322 Store SKU 393885 Manufacturer Product # 8300826-1546-XL Availability In Stock: Ships within 24 hours
Product Style XS / Grey/Black/Yellow Item # 10467329 Store SKU 393893 Manufacturer Product # 8300826-9510-XS Availability Only 3 Left: Ships within 24 hours
Product Style SM / Grey/Black/Yellow Item # 10467330 Store SKU 393894 Manufacturer Product # 8300826-9510-S Availability In Stock: Ships within 24 hours
Product Style MD / Grey/Black/Yellow Item # 10467331 Store SKU 393895 Manufacturer Product # 8300826-9510-M Availability In Stock: Ships within 24 hours
Product Style LG / Grey/Black/Yellow Item # 10467332 Store SKU 393896 Manufacturer Product # 8300826-9510-L Availability In Stock: Ships within 24 hours
Product Style XL / Grey/Black/Yellow Item # 10467333 Store SKU 393897 Manufacturer Product # 8300826-9510-XL Availability In Stock: Ships within 24 hours
Product Style 2XL / Grey/Black/Yellow Item # 10467334 Store SKU 393898 Manufacturer Product # 8300826-9510-XXL Availability Out of Stock
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